S-(2-Carboxypropyl)-L-cysteine

Name: S-(2-Carboxypropyl)-L-cysteine
Brand: ChemScene
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CAS No. 6852-42-2
Cat. No. CS-0437382
Purity≥97%
MDL No.MFCD27935483

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

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S-(2-Carboxypropyl)-L-cysteine|CS-0437382

Structure of 6852-42-2

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General Information

CAS No. 6852-42-2
Cat. No. CS-0437382
Purity ≥97%
MDL No. MFCD27935483
Storage 4°C, stored under nitrogen
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₇H₁₃NO₄S
Molecular Weight 207.25
Synonym(s) β-Isobuteine
SMILES OC(C(C)CSC[C@H](N)C(O)=O)=O

Description

S-(2-Carboxypropyl)-L-cysteine features a cysteine scaffold functionalized with a carboxypropyl side chain, enhancing solubility and stability. This derivative serves as a targeted probe for thiol-reactive systems, enabling precise labeling in biochemical assays. Its zwitterionic character supports efficient incorporation into peptide conjugates under physiological conditions.

Application

S-(2-Carboxypropyl)-L-cysteine serves as a versatile cysteine-derived building block for peptide and thiol-based conjugation chemistry. Its pendant carboxylic acid enables direct coupling via amide bond formation, while the free thiol facilitates site-specific bioconjugation or disulfide-linked assembly. The molecule exhibits good bench stability and compatibility with standard purification techniques, making it well-suited for synthetic applications in medicinal chemistry and protein modification workflows.

Safety Information

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GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P280-P302+P352

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Computational Chemistry Data

TPSA 100.62
LogP -0.1478
H_Acceptors 4
H_Donors 3
Rotatable_Bonds 6

Other Classifications

Bioactive Molecules Natural Products

Building Blocks Skeleton Fatty chain compounds

Life Science Amino Acids and their Derivatives Cysteine and derivatives

Building Blocks Functional Group Thioether

Building Blocks Functional Group Carboxylic Acid

Building Blocks Skeleton Chiral compounds Chiral Building Blocks

Chemical Biology Peptide Chemistry Unnatural Amino Acid Derivatives

Key Words

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S-(2-Carboxypropyl)-L-cysteine

CAS No. 6852-42-2

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